AirHint found the following cheapest return flights from Hong Kong (HKG) to Barcelona (BCN) in December 2025 (see full year).

Return flights

02 Dec - 14 Dec	Air China
02 Dec - 09 Dec	Air China
05 Dec - 12 Dec	Air China
12 Dec - 14 Dec	Air China
04 Dec - 11 Dec	Air China
05 Dec - 09 Dec	Air China
04 Dec - 14 Dec	Air China
01 Dec - 08 Dec	Air China
05 Dec - 14 Dec	Air China
06 Dec - 14 Dec	Air China
14 Dec - 10 Jan	Air China
25 Dec - 08 Jan	Finnair
26 Dec - 01 Jan	Lufthansa
28 Dec - 02 Jan	Air China
25 Dec - 04 Jan	Finnair
25 Dec - 01 Jan	SWISS
27 Dec - 03 Jan	Lufthansa
26 Dec - 03 Jan	Lufthansa
24 Dec - 01 Jan	Emirates
24 Dec - 04 Jan	Emirates

Also check the deals for one-way flights from Hong Kong to Barcelona in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Hong Kong to Barcelona in December from $447

Return flights